Maybe it's the same issue I suffer from since about three months and mentioned without any solution in the sidux forum? A problem that's spread over all current distributions I guess, in combination with certain hardware... Data CDRs are not recognized, can be mounted manually but do not appear in dolphin's sidebar and the devicemanager. Independent from drive, sata, pata, distribution, kernel. Affects only certain PCs (mainboard?), no problem with fresh install of old sidux Ourea on same machine.

I would try changing the "noauto" option to "auto", and then remount (or reboot) and see if it likes the CDs better. If it's not better, change it back to "noauto", which appears to be the default for the cdrom device.

I also cannot open audio cds anymore with kscd, amarok, banshee etc., only kaffeine can do it. That's not a problem of the device manager, the audio cd is recognized as such and all options are available. Just the programs don't want to see the cds.